Plinth



FIG. 1 is a top front right side perspective view of a plinth showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a bottom rear left side perspective view thereof; and,

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a plinth, as shown and described. 